Tukukkk

I have a project code as below, I wish it can get urls from func getUrls(), but Xcode returns error message like title says.

I have search and try some solution to fix it, but all not works. Should I write it with another way, or just fix this error ? Is the declaration for arrUrls was wrong, or somewhere need to make correction?

p.s. If you answer me by a comment, remember to teach me how to make an "Answered mark" for your answer.:) Thank you.

var arrUrls = [String]()



@IBOutlet weak var webView: UIWebView!

override func viewDidLoad() {

    super.viewDidLoad()





getUrls(url: url, completion: arrUrls) // Error Message: Cannot convert value of type '[String]' to expected argument type '([AnyObject]) -> Void'



...do something with array 'arrUrl'....but can't, because of the bug!



}







func getUrls(url : URL  ,completion: @escaping (([AnyObject]) -> Void)) {



    let task = URLSession.shared.dataTask(with: url, completionHandler: { (data, response, error) -> Void in

        do {

            if let jsonResult = try JSONSerialization.jsonObject(with: data!, options: JSONSerialization.ReadingOptions.allowFragments) as? [String : AnyObject] {



                if let subjects = jsonResult["subjects"] as? [AnyObject]? {



                    for subject in subjects! {

                        if let content = subject["content"] as? [String : AnyObject] {



                            let s = String(describing: content["url"]!)

                            arrUrls.append(s)

                        }

                    }

                }

            }

            completion(arrUrls as [AnyObject])

        }catch {

            print("json error: (error)")

        }

    })

    task.resume()

}

You need to call like this

getUrls(url: url) { (arr) in





}

if you edit the array inside the function then no need to return a completion value

func getUrls(url : URL  ,completion: @escaping (() -> Void)) 

with

getUrls(url: url) {  



  // refresh ui here



 DispatchQueue.main.async {

   if firstItem = self.arrUrls.first , let url = URL(string:firstItem) {

      webView.load(URLRequest(url: url))

   }

 }

change code to this

func getUrls(url : URL  ,completion: @escaping (() -> Void)) {



    let task = URLSession.shared.dataTask(with: url, completionHandler: { (data, response, error) -> Void in



        guard let data = data else { return }



        do {

            if let jsonResult = try JSONSerialization.jsonObject(with: data) as? [String : Any] {



                if let subjects = jsonResult["subjects"] as? [[String:Any]] {



                    for subject in subjects {



                        if let content = subject["content"] as? [String : Any] {



                           if let s = content["url"] as? String

                           {

                              self.arrUrls.append(s)

                           }

                        }

                    }



                    completion()



                }

            }



        }catch {



            completion()

        }

    })

    task.resume()

}